/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**---
 description: >
  Type assertions check for assignment compatibility in both directions. 
  Thus, type assertions allow type conversions that might be correct, but aren't known to be correct.
 module: ESNext
 isCurrent: true
 ---*/


import { Assert } from '../../../../suite/assert.js'

class P{ }
class C extends P { }
function func(str: string): P {
    if (str === "string") {
        return new C();
    }
    return C;
}
let c = <C>func("string");
Assert.equal(JSON.stringify(c), '{}');